I've got a scene set up where I basically have some 3D text and I want primitive objects to fall down and dislodge individual letters as they hit, causing them to tumble and fall out of frame as each primitive hits.

Any hints on how I could set this up? I'm new to rigid body setups in realflow. So far I've got some interaction with the letters, but not the effect I'm after. The text has to be completely still or "hovering" until the primitives hit.